<button>
  <p>Crush!</p>
</button>
<style>
/* From Uiverse.io by satyamchaudharydev - Tags: button */
button {
 border: none;
 width: 140px;
 height: 50px;
 color: #fff;
 z-index: 1;
 display: flex;
 background: #000;
 position: relative;
}

button p {
 margin: 0 auto;
 align-self: center;
 font-size: 17px;
 font-weight: bold;
 text-align: center;
}

button::after {
 position: absolute;
 content: "";
 width: 100%;
 z-index: -1;
 height: 10%;
 bottom: 0;
 clip-path: polygon(0% 74%, 4% 75%, 8% 76%, 11% 77%, 15% 78%, 20% 78%, 25% 77%, 32% 77%, 37% 75%, 40% 74%, 43% 74%, 46% 73%, 52% 72%, 57% 72%, 65% 74%, 66% 75%, 71% 78%, 75% 82%, 81% 86%, 83% 88%, 88% 91%, 90% 94%, 94% 96%, 98% 98%, 100% 100%, 82% 100%, 0 100%);
 background: #8792eb;
 transition: 0.2s ease;
}

button::before {
 position: absolute;
 content: "";
/*   bottom: 80%; */
 transform: rotate(180deg);
 width: 100%;
 height: 10%;
 transition: 0.2s ease;
/*   bottom:; */
 z-index: -1;
 clip-path: polygon(0% 74%, 4% 75%, 8% 76%, 11% 77%, 15% 78%, 20% 78%, 25% 77%, 32% 77%, 37% 75%, 40% 74%, 43% 74%, 46% 73%, 52% 72%, 57% 72%, 65% 74%, 66% 75%, 71% 78%, 75% 82%, 81% 86%, 83% 88%, 88% 91%, 90% 94%, 94% 96%, 98% 98%, 100% 100%, 82% 100%, 0 100%);
 background: #8792eb;
}

button:hover::after {
 clip-path: polygon(0 30%, 9% 34%, 7% 39%, 11% 43%, 13% 33%, 17% 30%, 24% 34%, 25% 35%, 30% 31%, 30% 38%, 39% 33%, 35% 43%, 43% 45%, 55% 46%, 65% 74%, 67% 66%, 81% 57%, 75% 82%, 81% 86%, 83% 88%, 88% 91%, 90% 94%, 94% 96%, 98% 98%, 100% 100%, 82% 100%, 0 100%);
 height: 80%;
}

button:hover::before {
 clip-path: polygon(0 30%, 9% 34%, 7% 39%, 11% 43%, 13% 33%, 17% 30%, 24% 34%, 25% 35%, 30% 31%, 30% 38%, 39% 33%, 35% 43%, 43% 45%, 55% 46%, 65% 74%, 67% 66%, 81% 57%, 75% 82%, 81% 86%, 83% 88%, 88% 91%, 90% 94%, 94% 96%, 98% 98%, 100% 100%, 82% 100%, 0 100%);
 height: 80%;
}


</style>
